Power head for a pump



Jan. 9, p A. MYERS POWER HEAD FOR A PUMP Original Filed Feb. 12, 1931 2 Sheets-Sheet l /l TTORA E 1 5 Jan. 9, 1934- P. A. MYERS POWER HEAD FOR A PUMP Original Filed Feb l2 1931 2 Sheets-Sheet 2 NVE/VTOR JQM/Q/MWTJ A TTURNE K5.

Patented Jan. 9, 1934 UNiTED STATES ?ATENT OFFICE POWER HEAD FOR A PUMP Philip A. Myers, Ashland, Ohio, assignor to The F. E. Myers and Bro. Company, Ashland, Ohio,

a corporation of Ohio Appiication February 12,

1931, Serial No. 515,364

Renewed November 10, 1933 18 Claims.

This invention relates to improvements in power heads for pumps, and has for its object to provide an apparatus of this kind in which rotary motion is converted into reciprocatory motion, with all the thrusts in the same plane and with the power applied equally on each side of the plane of thrust.

It is also an object of this invention to provide a rotating crank which has connected thereto means for moving in a vertical line a head member, to which a pump rod is attached.

t is also an object of this invention to provide, in connection with means for causing a vertical movement of a pump rod, a casing in which the structure is located and adapted to contain a lubricant for lubricating the Working parts.

These and other advantages will appear from the following description taken in connection with the drawings, which show a preferred embodiment of this invention.

Referring to the drawings:

Figure 1 is a. vertical section through the easing showing the operating mechanism.

Figure 2 is a vertical section on the line 22 of Figure 1.

Figure 3 is a vertical section on the line 3-3 of Figure 1.

1 Figure 4 is a vertical section on the line 44 of Figure 1.

The operating mechanism of this power head is located in a casing consisting of a front wall 1, a rear wall 2, a bottom 3 and side walls 4. In the rear wall is a vertical slot 5.

In the front and rear walls are bearings 6, one in each wall, for supporting the ends of a shaft 7. Each end of this shaft rotates in one of the bearings. This shaft is not continuous in one straight line but has offset therefrom, somewhat remote from the ends, arms 8 which have their outer ends connected by a bearing shaft 9 parallel to the end parts of the complete shaft 7 Adjacent one end of the shaft and adjacent one of the bearing members 6 is a gear 10 for operating the shaft '7 to cause it to rotate.

Around the bearing shaft 9, which is relatively long compared with other parts of the shaft '7, parallel therewith, is a sleeve 11 composed of two halves, an upper and a lower half. For rotating the shaft 7 by means of the gear 10 there is provided a power shaft 12, which is suitably supported in the front and rear walls, and has thereon a pinion 13 meshing with the gear 10 for rotating the gear 10 and the shaft 7. All of the parts here described are located within the casing but on the end of the shaft 12 without the casing is a pulley 14, by which power may be transmitted to the shaft 12. This pulley is adapted to support a belt connected to some source of power.

Mounted upon the bearing shaft 9 and around the sleeve 11 is a bearing composed of an upper sleeve 15 and a lower sleeve 15a, attachedto each other by means of bolts 15b passing through ears on opposite sides of the parts 15 and 15a. Each one of these bearing parts contains onehalf of the sleeve 11. By this means the parts may be easily attached to and removed from the bearing shaft 9 so that the worn parts ma be removed, particularly the sleeve 11.

Extending from one end of the part 15 is a right-angularly disposed arm 16. Extending from the other end of the part 15 is an inclined arm 1'7. This arm inclines from one end of the part 15 toward the arm 16 and forms with this arm a head 18, which has extending therefrom a spindle 19. The parts 15,16, 17 and 18 constitute a connecting frame between the bearing shaft 9 and the spindle 19. On the spindle 19, adjacent the head 18, is an anti-friction guide roller 20 located on the spindle 19 so that it may freely rotate as the head moves up and down. This roller is guided in its vertical movement between two flanges 21 projecting inwardly from the back wall 2 adjacent the lateraledges of the slot 5. The purpose of the slot 5 is to provide a space in the rear wall for the vertical movement of the spindle 19 andthe parts carried thereby. The casing, composed of the parts hereinbeforedescribed, has a cover or lid 22 which entirely closes the upper part of the casing.

On the rear wall 2, at the lower end of th slot 5, is a lip 23 adapted to catch lubricant that drops from the spindle 19 and convey it back into the lubricant reservoir formed in the lower part of the casing. On the outer end of the spindle 19 is a sleeve 24 held thereon by means of a screw 25 fitting within the end of the spindle. This screw passes through an opening in the outer end of the sleeve but permits a free oscillation of the sleeve on the spindle 19. Extending downwardly from the sleeve 24 is a pump rod 26, which has its upper end suitably attached to the sleeve 24. In the present instance this rod is threaded into a boss on the outer end of the sleeve 24. This pump rod extends downwardly into a pipe 27, on the upper end of which is a discharge head 28 suitably supported on the rear wall 2 of the casing.

Extending upwardly from the discharge hea and in line with the pipe 27 is a cylinder 29, which has therein a plunger 30 attached to the pump rod 26. Inclosing the sleeve 24, the pump rod 26 and the cylinder 29 is a casing 31 supported on the rear wall of the main casing. This plunger cylinder 29 is used on a singleacting cylinder so that part of the water is discharged on the down stroke by the plunger30, but when this working head is operated in connection with a double-acting cylinder I do not desire the differential cylinder but instead I use a regular packing gland.

By means of the two casingsall ofthe operating parts of the pump head are inclosed, within an inclosure so that the parts are protected from foreign matter, but the parts 22 and 31 may be easily removed for repairs, or any other pur pose. The lower part of the main casing constitutes a lubricant chamber 32. The lubricant in this chamber extends up to the pivotal supports of the shaft 7. By this means the parts are thoroughly lubricated.

The resistance of the piston rod up or down in pumping a heavy load is intended to be carried entirely on the shaft 9 so there is no friction or thrust on the guide. The only function of the roller 20 is to keep the spindle l9 traveling in a vertical plane while the shaft 9 is revolving. The guide does not have any face so that the thrust of the load comes entirely on the bearing 11- around the shaft 9, and the object is to make the shaft 9 sufficiently long so as to take care of this resistance. Ihave therefore made a working head which overcomes in the greatest degree all possible friction. This results in operatingihis headwith materially less power than heretofore necessary for pumping an equivalent amount of w'aten- V p It will be understood that the particular form of the pitnian, whether with converging arms or not, is not-material, and I have only shown one form which I have found advantageous. Any form-'c'an'be employed so long asfthe principles ofmy invention are in the mechanism.

-I- des'n'e'to comprehend within my invention such-modifications as may be embraced within 'my claims and the scope of my invention.

Having thus fully described my invention, what'I claim as new anddes'ire to secure by Letters Patent, is: i I r '1 -In a power head for pump's, a reciprocating member, a rotating member locatedin a plane of movement of the reciprocating member, said rotating member comprising a shaft supported 'at each end and having an offset part, and a con- {i nect'ing member between the offset part and the reciprocating member, said connecting member comprising a pair of arms converging from the shaft. v

3. In a power head for pumps, a casing having a guidemember therein, a 'reciproca'ting member gu'idedby the guide member, an operating shaft supported 'at each end in'said casing and having an offset part intermediate "its ends, said shaft being located in a'plarie of movement of the reciprocating member, and an operative connection between the offset part and the reciprocating member, said connection comprising a pair of arms diverging from the reciprocating member.

4. In a power head for pumps, a casing having in one wall a guide, a reciprocating member in said guide, an operating shaft supportedat each end in said casing for rotation in a plane of movement of said reciprocating member, said shaft having a relatively long offset bearing part, and a triangularly shaped pitman engaging said bearing part and connected to said reciprocating member,

5. In a power head for pumps, a casing having a guide therein, a reciprocating head in said guide, an operating shaft supported by said casing for rotation in the plane of movement of the head, said shaft having a relatively long offset bearing part, a pair of diverging arms extending from said head, and means on the diverging ends of said arms engaging the bearing part of said shaft. p

6. In a power head for pumps, a casing having a guide therein, a reciprocating head in said guide, an operating shaft supported by said casing for rotation in the plane of movement of the head, said shaft having a relatively long offset bearing part, a pair of diverging arms extending from head, and means connecting the di verging ends of said arms engaging the bearing part of said shaft. I

7. In a power head for pumps, a 'casing having a rear wall with a vertical slot therein and a guide flange adjacent each side .of the slot, a reciprocating head guided by said flanges, an operating shaft supported at each end by said casing beneath the slot for rotation in the plane of movement of the head, said shaft having a relat'ively long bearing part, and 'a frame integral with the head and pivotally connected to the bearing part of the shaft, said frame diverging from the head to said bearing part and engaging the whole of said bearing part.

'8. In 'a power head for pumps, a reciprocating member, a crankshaft supported at each "end forr'o-ta'tion in a plane of movement of the reciprocating member, a gear on said shaft a djacent one end, and a 'triangularly shaped connection between said crankshaft and the reciprocating member.

9. In a power head for pumps, a reciprocating member," a crankshaft supported at each end for rotation in a plane of movement of the reciprocating member, the crank part of said shaft being relatively. long, a gear on-said shaft, and a triangularl'y shaped connection between said reciprocating member and the crankshaft engaging the crank part of said shaft.

10. In a power head for'pumps'a reciprocating "member, a crankshaft supported at each 'endfor rotation in a plane of movement of the reciprocating member, a connecting member comprising a pair of arms diverging from'said reciprocating member, and a crank shaft engaged by the end of said connecting member so that a rotation of said shaft will reciprocate the respindle engaging said flanges, and an operating crankshaft supported in'said casingand'havirig an offset part fitting in said bearing sleeve.

12. In a power head, a casing having a wall, said wall having a slot therein and a guide flange on each .side of the slot, a triangular connecting frame having a spindle at one end and a long bearing sleeve at the other end, a roller on said spindle engaging said flanges, and an operating crankshaft rotatably supported in said casing and having an offset part fitting in said sleeve, said shaft being supported for rotation in a plane passing through the line of movement of the spindle.

13. In a power head, a sucker rod, a pitman frame narrow at one end and wide at the other connected thereto at its narrow end, means for guiding the pitman adjacent the point of connection with the sucker rod, a crank mounted on the wide end of the pitman, and means for actuating said crank, said pitman including a broad hearing at its point of connection with said crank.

14. In a power head, a vertically reciprocating sucker rod, a casing having a guideway in one wall thereof, a pitman located in said casing projecting through said guideway and connected to one end of the sucker rod, a roller on said pitman adjacent said connection engaging the walls of said guideway, and a crank in said casing supporting the other end of said pitman.

15. In a power head, a vertically reciprocating sucker rod, a casing having a guideway in one wall thereof, a pitman located in said casing projecting through said guideway and connected to one end of the sucker rod, a roller on said pitman adjacent said connection engaging the walls of said guideway, and a crank in said casing supporting the other end of said pitman,

said crank being pivoted in the plane of said sucker rod.

16. In a power head, a casing, a crank having its ends supported in the walls of said casing, a pitman mounted on said crank extending from side to side thereof to provide a broad bearing, means of actuating said crank, a guide roller mounted on the upper end of said pitman, means for guiding said pitman at its upper end in a vertical plane by engagement with said roller, and a sucker rod connected to said pitman outside of said casing adjacent said guide roller.

17. In a power head, a casing, a crank having 7 its ends supported in the walls of said casing, a pitman mounted on said crank extending from side to side thereof to provide a broad bearing means of actuating said crank, a guide roller mounted on the upper end of said pitman, means for guiding said pitman at its upper end in a. vertical plane by engagement with said roller, and a sucker rod connected to said pitman outside of said casing adjacent saidguide roller, said pitman comprising a triangular-shaped frame with the base of the triangle constituting the broad bearing on the crank. V

18. In a power head, a pitman having on one end a relatively long bearing shaft, a guide roller on the shaft adjacent the pitman, a sleeve fitting over the end of the shaft, means extending through the sleeve into the shaft to hold the 105 sleeve on the shaft for oscillation thereon, a sucker rod attached at one end to the sleeve, and means engaging the sleeve to guide the shaft for movement in a vertical plane.

PHILIP MYERS. 

